Geoff...
You are correct about the on-board support battery, which on s/n prior to
585-395 required the addition of a charging circuit.
I was referring to the Dallas MC146818AP Rom/Rom/Rtc chip on the daughter
board, which has its own battery and lasts for 10+ years at worst.
It is possible some of the Paragons had other than Dallas chips, and some of
them did not have on-chip batteries.
Check out: http://www.informit.com/articles/article.aspx?p=30273&seqNum=15
Sorry for the confusion.
Phil C. Sr.
k4dpk
----- Original Message -----
From: "geoffrey mendelson" <geoffreymendelson@gmail.com>
To: "Discussion of Ten-Tec Equipment" <tentec@contesting.com>
Sent: Monday, May 24, 2010 4:51 PM
Subject: Re: [TenTec] Paragon - easy to work on?
On May 24, 2010, at 11:00 PM, Phil Chambley Sr. wrote:
The battery in the Paragon is inside one of the chips on a daughter
board at
the rear of the Logic board, and I saw an outfit on the internet
(something
like Batteries R Us :) that had those. You'll need to search on
battery
sites with that chip number.
The Pargaon came with two versions of the battery. The earlier one
used a standard 9v battery. The later one added a charging circuit and
replaced the battery with a 9v NiCad.
I did a quick web search and found this page:
http://www.unicorn-meadow.com/radio/Paragon.html
If you look at the picture of the rig being placed on the bench for
the first time, you can see the battery quite clearly in the center of
the radio (from right to left) in the rear. If you look at the front
just left of the display, and follow it back, you'll see it.
He also discusses the charging modification later in the text.
73,
Geoff.
--
geoffrey mendelson N3OWJ/4X1GM
Jerusalem Israel geoffreymendelson@gmail.com
New word I coined 12/13/09, "Sub-Wikipedia" adj, describing knowledge
or understanding, as in he has a sub-wikipedia understanding of the
situation. i.e possessing less facts or information than can be found
in the Wikipedia.
_______________________________________________
TenTec mailing list
TenTec@contesting.com
http://lists.contesting.com/mailman/listinfo/tentec
|